磨粒只占总重的30%；其自锐性弱，因而磨削效率很低。
Abrasive grain makes up only 30% weight; its self-sharpening action is weaker, resulting in lower grinding efficiency.
以磨料磨损原理为指导，结合古今实例，讨论锋利刀片之锋利性、耐磨性、利磨性和自磨锐等问题的实质，给出明确定义，澄清一些模糊概念。
Based on abrasive wear theory and combined recent and ancient samples, the essential of the sharpness, wear resistance, sharpened-ability and self-sharpening performance of cutter were discussed.
其主要特性是：散热性能好、表面清洁度极高、亲水性好、粘结能力强、自锐性好、磨切效率高。
The main particulars are well-heat-spread, well clean surface, good water affinity, strong adhesion, good self-sharp and high grinding efficiency.
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